Re: M27 - need a hand, please!
Posted: Sun Oct 14, 2018 1:12 am
Richard,
I updated to the latest version.
That really was a very helpful video - I'll be referring back to that. Attached is a jpg of where I ended up after trying to replicate what you've done (first full run-through).
There were a couple of things you wondered about during the video...
The noise is from my backyard sky - I think I'm in an Orange zone.
The image is a dss stack (save as, don't apply), from my Nikon D5300 DSLR, so that explains the size.
The green in some of the stars may be from my scope. It's an old (2002) Stellarvue 102EDT. A really good scope for its time, but not an APO, and I think that mostly shows up in both the size, and internal color of the stars.
If I keep at it, I think most of what you've done will sink in eventually , but the one step that's just a complete surprise is the effect of ROI in Autodev. The star you selected does indeed clean things up, but selecting others produces different effects, and of course, that star isn't really the point of interest (M27). I looked back at the doc, but no lights went on. Best guess is that it guided the stretch for the star field, and M27's appearance was just a fortunate byproduct. What do you think?
Thanks again for all your help!
- Bob
I updated to the latest version.
That really was a very helpful video - I'll be referring back to that. Attached is a jpg of where I ended up after trying to replicate what you've done (first full run-through).
There were a couple of things you wondered about during the video...
The noise is from my backyard sky - I think I'm in an Orange zone.
The image is a dss stack (save as, don't apply), from my Nikon D5300 DSLR, so that explains the size.
The green in some of the stars may be from my scope. It's an old (2002) Stellarvue 102EDT. A really good scope for its time, but not an APO, and I think that mostly shows up in both the size, and internal color of the stars.
If I keep at it, I think most of what you've done will sink in eventually , but the one step that's just a complete surprise is the effect of ROI in Autodev. The star you selected does indeed clean things up, but selecting others produces different effects, and of course, that star isn't really the point of interest (M27). I looked back at the doc, but no lights went on. Best guess is that it guided the stretch for the star field, and M27's appearance was just a fortunate byproduct. What do you think?
Thanks again for all your help!
- Bob